Mapping the structural contours across a stratigraphic unit reveals a three-dimensional picture of its subsurface distribution, deformation, structural relief, and stratigraphic displacement along faults. The structure here is a north-plunging, asymmetric anticline, its eastern limb the steepest. The data needed for this exercise is usually acquired from borehole intersections and velocity-depth conversions from seismic profiles.
How to do things, In the field

Plotting a structural contour map

Structural contour maps are the subsurface equivalent of surface topography maps. They are widely used in exploration geology (regional mapping, […]